Assisting the TBI

The CID may also assist the Tennessee bureau of investigation (TBI) in any other criminal investigations not specified in § 4-7-404 , upon written request by the director of the TBI and approval of the commissioner of safety. Acts 2006, ch. 879, § 1. The CID may also assist the Tennessee bureau of investigation (TBI) in any other criminal investigations not specified in § 4-7-404 , upon written request by the director of the TBI and approval of the commissioner of safety. Acts 2006, ch. 879, § 1.